Yes, most of them. The amount of land offered varied.
In particular check the Olmert peace offer from 2008 which offered Palestinians basically every single thing they wanted - but they refused it anyway (apparently because Abbas was too weak politically to make it happen, and Olmert did not want to go public without assurances from Abbas that it would actually happen).
(Not sure about the unconditional part though - why in the world would it be unconditional?)
Land provided with conditional use is not sovereign land. If the palestinians must continue to defer to israeli conditions on use then the land hasn't truly been returned.
The Olmert offering required the large settlements remain, which is an obvious non-starter.
